A towing vehicle pulls a car along a level road with a rope that makes an angle of…
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A towing vehicle pulls a 900kg car along a level road with a rope that makes an angle of 15∘ above the horizontal. During a 100m stretch, the car’s speed increases uniformly from 5ms−1 to 12ms−1. Neglect all retarding forces.
(i) Calculate the work done on the car during this stretch.
(ii) Using the result of part (i), determine the magnitude of the constant force exerted by the rope.
(iii) If the car covers the 100m distance in 20s, compute the average power delivered by the towing vehicle’s force during this interval.